一、准备一个数据库表格
创建ssm数据库,并创建account表
create database ssm;
use ssm;
create table account(
id int primary key auto_increment,
name varchar(20),
money double
);
二、导入依赖
properties部分
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<spring.version>5.0.2.RELEASE</spring.version>
<slf4j.version>1.6.6</slf4j.version>
<log4j.version>1.2.12</log4j.version>
<mysql.version>8.0.15</mysql.version>
<mybatis.version>3.4.5</mybatis.version>
</properties>
依赖部分
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.6.8</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.version}</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency> <!-- log start -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>${log4j.version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${slf4j.version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>${slf4j.version}</version>
</dependency> <!-- log end -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.0</version>
</dependency>
<dependency>
<groupId>c3p0</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.1.2</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
三、部署tomcat服务器
四、编写代码
目录结构如下:
1、Account实体类
2、AccountDao接口
@Repository("accountDao")
public interface AccountDao {
@Select("select * from account")
public List<Account> findAll();
@Insert("insert into account(name,money)values(#{name},#{money})")
public void saveAccount(Account account);
}
3、AccountService接口
public interface AccountService {
public List<Account> findAll();
public void saveAccount(Account account);
}
4、AccountServiceImpl类
实现AccountService接口
@Service("accountService")
public class AccountServiceImpl implements AccountService {
@Autowired
private AccountDao accountDao;
@Override
public List<Account> findAll() {
System.out.println("查询所有方法执行了...");
return accountDao.findAll();
}
@Override
public void saveAccount(Account account) {
System.out.println("保存方法执行");
accountDao.saveAccount(account);
}
}
5、accountController类
@Controller
@RequestMapping("account")
public class accountController {
@Autowired
private AccountService accountService;
@RequestMapping("findAll")
public String accountFindAll(Model model){
System.out.println("执行控制层:查询所有...");
List<Account> accounts = accountService.findAll();
//查询成功向list.jsp页面存入查询出的账户信息列表
model.addAttribute("list",accounts);
//前往list页面
return "list";
}
@RequestMapping("save")
public void accountSave(Account account, HttpServletRequest request, HttpServletResponse response) throws IOException {
System.out.println("执行控制层:保存新账户...");
accountService.saveAccount(account);
//查询完后,重定向,执行上面的findAll方法,显示添加后的所有账户
response.sendRedirect(request.getContextPath() + "/account/findAll");
return;
}
}
五 、创建框架需要的配置文件
log4j其实无所谓
1、applicationContext.xml(spring框架配置)
注意配置数据库部分的注释
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd">
<!--开启注解扫描,并除了controller以外都扫描
因为我们希望spring框架只扫描dao和service
让controller只被springMVC框架扫描-->
<context:component-scan base-package="com.ssn">
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
<!--spring整合mybatis-->
<!--配置c3p0连接池对象-->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<!--这里中间加个cj,估计和mysql版本或者mysql-connector-java版本有关
我的mysql版本是8+,mysql-connector-java选择5.1.6不行,会报tx_isolation的错误,选择8.0.15是可以的-->
<property name="driverClass" value="com.mysql.cj.jdbc.Driver"></property>
<!--这里可以用///ssm替代//localhost:3306/ssm-->
<!--高版本的mysql要设定时区serverTimezone=UTC,后面是设置字符编码防止乱码
原本的&号由于在字符串中,需要使用&-->
<property name="jdbcUrl" value="jdbc:mysql:///ssm?serverTimezone=UTC&characterEncoding=utf8&useUnicode=true"></property>
<property name="user" value="root"></property>
<property name="password" value="root"></property>
</bean>
<!--配置SqlSession工厂-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
</bean>
<!--配置扫描的dao包-->
<bean id="mapperScan" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.ssn.dao"></property>
</bean>
<!--spring框架的声明事务管理-->
<!--配置事务管理器-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean>
<!--配置事务通知-->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="find*" read-only="true"/>
<tx:method name="save*" read-only="false" isolation="DEFAULT"></tx:method>
</tx:attributes>
</tx:advice>
<!--配置aop增强-->
<aop:config>
<aop:advisor advice-ref="txAdvice" pointcut="execution(* com.ssn.service.impl.*.*(..))"></aop:advisor>
</aop:config>
</beans>
2、springmvc.xml(springMVC框架配置)
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation=" http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">
<!--配置注解扫描的包-->
<context:component-scan base-package="com.ssn">
<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
<!--配置前端控制器-->
<bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/pages/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
<!--开启mvc的注解支持-->
<mvc:annotation-driven></mvc:annotation-driven>
</beans>
3、SqlMapConfig.xml(mybatis框架配置)
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<environments default="mysql">
<environment id="mysql">
<transactionManager type="JDBC"></transactionManager>
<dataSource type="POOLED">
<!--这里的连接配置的value值要和spring配置文件里的一样-->
<property name="driver" value="com.mysql.cj.jdbc.Driver"/>
<property name="url" value="jdbc:mysql:///ssm?serverTimezone=UTC&characterEncoding=utf8&useUnicode=true"/>
<property name="username" value="root"/>
<property name="password" value="root"/>
</dataSource>
</environment>
</environments>
<mappers>
<package name="com.ssn.dao"/>
</mappers>
</configuration>
4、web.xml
<web-app>
<display-name>Archetype Created Web Application</display-name>
<!--设置字符编码-->
<filter>
<filter-name>characterEncodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>characterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!--设置spring的监听器,在项目启动的时候,就去加载applicationContext.xml的配置文件
但是该监听默认只加载WEB-INF下的applicationContext.xml,由于我们的配置文件不在该路径下
所以通过最下面的那个<context-param>来设置加载context的路径
-->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!--配置加载类路径的配置文件-->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
<!--配置前端控制器-->
<servlet>
<servlet-name>dispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!--加载springmvc.xml配置文件-->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:springmvc.xml</param-value>
</init-param>
<!--在服务器启动的时候就加载-->
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcherServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
六、编写前端页面
1、index.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<a href="account/findAll">查询所有</a>
<br>
测试保存:
<form action="account/save" method="post">
姓名:<input type="text" name="name"><br>
金额:<input type="text" name="money"><br>
<input type="submit" value="保存">
</form>
</body>
</html>
2、list.jsp(用于显示结果)
<%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %>
<!--这里使用jsp的遍历-->
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<h3>list页面</h3>
<c:forEach items="${list}" var="account">
姓名:${account.name} 金额:${account.money}<br>
</c:forEach>
</body>
</html>
七、运行测试
1、点击查询所有:
2、保存一个新的账户
因为id是自增长的,所以我们无需键入id,只需要提供name和money
在执行save操作的时候,controller又帮我们重定向到findAll方法,帮我们跳转到list页面显示出所有的账户信息。
整合成功
整个流程:配置文件是重头戏
- 在spring配置中:
- 开启除了controller的注解扫描
- 配置连接池和数据库属性
- 配置SqlSessionFactoryBean的工厂对象
- 配置MapperScannerConfigurer扫描的dao包
- 配置事务控制器
- 配置事务通知
- 配置AOP增强
- 在springMVC配置中:
- 配置注解扫描的包只扫描controller包
- 配置前端控制器
- 开启springmvc的注解支持
- 在mybatis配置中:
- 配置连接池和数据库属性
- 配置映射的的注解的包
通过前端请求controller中的具体方法
方法中请求service层的方法,做具体的返回
在service层又调用dao层的方法操作数据库
查询出结果(做完操作)
在controller中决定下一步的操作(返回数据给前端或前往哪个页面)